Fan main shaft axial deviation detection device

Abstract

The utility model discloses a fan main shaft axial deviation detection device which comprises a bracket fixed on a fan base frame, a connecting rod is arranged above the bracket, the bracket is hinged with the middle part of the connecting rod, and one end of the connecting rod is rotatably connected with a detection bearing. The other end of the connecting rod is connected with a bracket through a spring, the bracket is further fixedly provided with a linear displacement sensor, and the linear displacement sensor and the fan main shaft are located on the same side of the connecting rod. And the end part of a measuring rod of the linear displacement sensor is clamped on the outer side surface of the corresponding side of the connecting rod in a position close to the spring. According to the utility model, the axial movement, namely the axial deviation condition, of the fan main shaft can be dynamically detected in real time, so that the use conditions of the fan main shaft, a bearing matched with the fan main shaft and the whole fan can be judged in time.

Description

Technical Field

[0001] The utility model belongs to the technical field of detection devices, and in particular relates to a device for detecting axial deviation of a main shaft of a fan. Background Art

[0002] Currently, in the tobacco industry, modular air conditioning units used in cigarette production workshops are equipped with centrifugal fans. While this type of fan is simple and easy to maintain, the harsh operating environment of tobacco factories can lead to acidic and alkaline deposits on the surfaces of the fan impeller and fan shaft. Over time, these deposits can corrode the impeller and shaft, disrupting dynamic and static balance, severely affecting impeller rotation, and increasing bearing loads. According to fan manufacturer data, for example, when the dust accumulation per blade exceeds 3 grams, the vibration caused by fan balance issues can increase bearing wear by 43%, leading to shaft movement and misalignment. Long-term operation increases the safety risks of modular air conditioning units. At the very least, this can cause increased fan vibration, significantly shortening bearing life and increasing maintenance pressure. In more severe cases, this can lead to sparks from friction between the impeller and the fan casing, seizure of the fan casing and impeller, odor-generating friction from slipping belts wrapped around the fan shaft, significantly increased bearing stress and damage, and even wear and tear of the fan shaft.

[0003] The current approach is to perform a visual inspection of the fan surface during weekly shutdowns. At the same time, according to the maintenance manual, the bearing seat of the fan in each modular air-conditioning unit is cleaned, oiled, tightened or replaced every six months, with preventive maintenance being the main focus.

[0004] The problems with the above-mentioned treatment methods are as follows: (1) Due to the characteristics of the fan's bearing seat and the unique fixing method of the fan's main shaft, the bearing seat shell needs to be completely removed to check the actual conditions of the bearings, sleeves and other components. During routine shutdown inspections, it is impossible to check the actual movement of the fan's main shaft only from the appearance; (2) Since the failures caused by the movement of the fan's main shaft are often sudden, it is necessary to take regular inspections and replacements of bearings. However, in the process of routine replacement of fan bearings, it is found that 90% of the fan bearings have no signs of wear on the surface, no noise when rotating, and intact seals, and can still be used. This shows that the fixed-cycle preventive maintenance has the problem of excessive maintenance, resulting in increased maintenance costs and waste of maintenance resources. Utility Model Content

[0005] In view of the above-mentioned defects of the existing technology, the utility model provides a fan main shaft axial deviation detection device, which can dynamically and real-time detect the axial movement, i.e., axial deviation, of the fan main shaft, and thus make timely judgments on the usage of the fan main shaft, the bearings matched with the fan main shaft, and the entire fan.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] The cam is connected to the support frame of the fan shaft by a spring, and the cam is connected to the support frame by a spring.

[0008] Furthermore, the connecting rod is horizontal and perpendicular to the main shaft of the fan when there is no axial deviation of the main shaft of the fan, and the measuring rod of the linear displacement sensor is parallel to the main shaft of the fan.

[0009] Furthermore, the detection bearing is connected to one end of the connecting rod through a bearing bracket, and the bearing bracket includes a bracket base plate that is horizontal and fixed to one side of the top surface of the connecting rod, and two vertical and parallel bracket side plates are integrally provided at one end of the top surface of the bracket base plate. A horizontal fixed shaft is fixed between the tops of the two bracket side plates, and the fixed shaft is parallel to the main shaft of the fan when there is no axial deviation of the main shaft of the fan. The inner ring of the detection bearing is sleeved and fixed on the fixed shaft, and the outer ring of the detection bearing is clamped in a groove on the outer circumference of the detection shaft sleeve.

[0010] Furthermore, a long mounting hole is provided on the bracket base plate, and the extension direction of the long mounting hole is parallel to the extension direction of the connecting rod. The bracket base plate and the connecting rod are fixedly connected by fasteners that pass through the long mounting hole and the connecting rod in sequence, and the installation position of the bracket base plate on the connecting rod is adjusted through the long mounting hole to adjust the installation spacing between the detection bearing and the connecting rod, and adjust the installation spacing between the detection bearing and the fan main shaft.

[0011] Furthermore, there are two fasteners, each of which includes a fastening bolt and a fastening nut.

[0012] Furthermore, the bracket is hinged to the middle portion of the connecting rod via a vertical hinge axis.

[0013] Furthermore, a mounting base is fixed on the top surface of the bracket, and a plurality of mounting sliders are provided on the top surface of the mounting base on both sides of the shell of the linear displacement sensor, each of the mounting sliders includes a slider body and a bolt screwed on the slider body, and horizontal slide grooves are respectively provided at the bottom of the two side surfaces of the shell of the linear displacement sensor, and the slider body of each mounting slider on each side is slidably connected to the slide groove on the corresponding side, and the arrangement position of the slider body of each mounting slider on each side in the slide groove on the corresponding side is adjusted to adjust the arrangement position of the shell of the linear displacement sensor on the mounting base, and the shell of the linear displacement sensor is fixed to the mounting base by tightening the bolts of each mounting slider.

[0014] Furthermore, an inwardly concave arc surface is formed on the outer surface of the corresponding side of the connecting rod at a position close to the spring, and a locking blind hole is provided on the arc surface, and the end of the measuring rod of the linear displacement sensor is locked in the locking blind hole.

[0015] Furthermore, the locking blind hole is arranged at a middle position of the arc surface.

[0016] Furthermore, a vertical first fixing rod is fixed at the other end of the connecting rod, the spring is horizontal and one end of the spring is fixed on the first fixing rod, and the other end is fixedly connected to the second fixing rod fixed on the bracket.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The fan main shaft axial deviation detection device in the present invention includes a bracket fixed on the fan base frame, a connecting rod is provided above the bracket and the bracket is hinged to the middle part of the connecting rod, a detection bearing is rotatably connected at one end of the connecting rod, the detection bearing is clamped in a groove on the outer circumference of a detection sleeve fixed at one end of the fan main shaft, the other end of the connecting rod is connected to the bracket through a spring, and a linear displacement sensor is also fixed on the bracket on the same side of the connecting rod as the fan main shaft, and the measuring rod end of the linear displacement sensor is clamped on the outer surface of the corresponding side of the connecting rod at a position close to the spring. When the fan main shaft is axially shifted, the detection sleeve rotates with the fan main shaft and axially shifts during the rotation. The axially shifted detection sleeve applies a force to the detection bearing, and the detection bearing is subjected to the force and causes one end of the connecting rod to produce a certain displacement relative to the bracket in the direction of the axial deviation of the fan main shaft, and causes the other end of the connecting rod to produce a certain displacement relative to the bracket in the direction opposite to the axial deviation of the fan main shaft. The linear displacement sensor detects the displacement produced by the other end of the connecting rod to detect the axial deviation distance of the fan main shaft. Therefore, the axial shift of the fan main shaft axial deviation detection device can dynamically and in real time detect the axial shift of the fan main shaft, and make timely judgments on the use of the fan main shaft, the bearings matched with the fan main shaft and the overall use of the fan according to the axial deviation of the fan main shaft. If the axial deviation of the fan main shaft is serious, it can be repaired in time to prevent the fault from expanding and the fan from being damaged, thereby eliminating safety hazards, saving maintenance time and maintenance costs, and ensuring the safe use of the combined air-conditioning unit.

[0019] In the present invention, a detection bearing is connected to one end of a connecting rod via a bearing bracket. The bearing bracket includes a horizontal bracket base plate fixed to one side of the top surface of the connecting rod. Two vertical and parallel bracket side plates are integrally provided at one end of the top surface of the bracket base plate. A horizontal fixed shaft is fixed between the tops of the two bracket side plates. The fixed shaft is parallel to the fan main shaft when the fan main shaft does not deviate axially. The inner ring of the detection bearing is sleeved and fixed on the fixed shaft, and the outer ring of the detection bearing is clamped in a groove on the outer circumference of the detection shaft sleeve. The bracket base plate is provided with a mounting slot, the extension direction of the mounting slot being parallel to the extension direction of the connecting rod. The bracket base plate and the connecting rod are fixedly connected by fasteners that pass through the mounting slot and the connecting rod in sequence. In this way, the mounting position of the bracket base plate on the connecting rod can be adjusted through the mounting slot to adjust the installation spacing between the detection bearing and the connecting rod, and the installation spacing between the detection bearing and the fan main shaft, so that the fan main shaft axial deviation detection device can be adapted to different fan main shaft models.

[0020] In the present invention, a mounting base is fixed to the top surface of the bracket, and a plurality of mounting sliders are provided on the top surface of the mounting base on both sides of the housing of the linear displacement sensor. Each mounting slider includes a slider body and a bolt screwed onto the slider body. Horizontal slide grooves are provided at the bottom of the two side surfaces of the housing of the linear displacement sensor. The slider body of each mounting slider on each side is slidably connected to the slide groove on the corresponding side. By adjusting the arrangement position of the slider body of each mounting slider on each side in the slide groove on the corresponding side, the arrangement position of the housing of the linear displacement sensor on the mounting base can be adjusted, and by tightening the bolts of each mounting slider, the housing of the linear displacement sensor is fixed to the mounting base. In this way, by providing multiple mounting sliders, it is convenient to replace linear displacement sensors of different ranges according to measurement requirements, so that the fan main shaft axial offset detection device has universality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the fan main shaft axial deviation detection device of the present invention after the detection sleeve, linear displacement sensor and mounting base are hidden;

[0022] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure in another direction;

[0023] Figure 3 This is a schematic diagram of the top view of the structure of the fan main shaft axial deviation detection device of the present invention after the linear displacement sensor and the mounting base are hidden.

[0024] Explanation of the reference numerals in the figure: 101, bracket, 102, connecting rod, 1021, arc-shaped surface, 103, detection bearing, 104, spring, 105, bearing bracket, 1051, bracket base plate, 10511, mounting long hole, 1052, bracket side plate, 106, fixed shaft, 107, fastening bolt, 108, fastening nut, 109, hinged shaft, 1010, first fixed rod, 1011, second fixed rod, 201, fan main shaft, 202, detection sleeve, 2021, groove. DETAILED DESCRIPTION

[0025] The following is a further detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, and are not intended to limit the present invention.

[0026] In the description of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating positions or location relationships, are based on the positions or location relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] In addition, in the description of the present invention, unless otherwise specified, “a plurality of” means two or more.

[0029] like Figure 1-Figure 3 As shown, a device for detecting the axial deviation of the main shaft of a fan is shown, comprising a bracket 101 fixed on the base frame of the fan, a connecting rod 102 is provided above the bracket 101, and the bracket 101 and the middle part of the connecting rod 102 are hinged by a vertical hinge shaft 109, one end of the connecting rod 102 is rotatably connected to a detection bearing 103, the detection bearing 103 is clamped in a groove 2021 on the outer circumference of a detection sleeve 202 fixed at one end of the fan main shaft 201, the other end of the connecting rod 102 is connected to the bracket 101 by a spring 104, and a linear displacement sensor on the same side of the connecting rod 102 as the fan main shaft 201 is also fixed on the bracket 101. Sensor, the end of the measuring rod of the linear displacement sensor is clamped on the outer surface of the corresponding side of the connecting rod 102 at a position close to the spring 104; the detection sleeve 202 is axially offset along with the fan main shaft 201 and applies a force to the detection bearing 103, so that one end of the connecting rod 102 is displaced relative to the bracket 101 in the direction of the axial offset of the fan main shaft 201, and the other end of the connecting rod 102 is displaced relative to the bracket 101 in the direction opposite to the axial offset direction of the fan main shaft 201. The linear displacement sensor is used to detect the displacement generated by the other end of the connecting rod 102, so as to detect the axial offset distance of the fan main shaft 201.

[0030] The present fan main shaft axial deviation detection device is used to convert the axial deviation of the fan main shaft 201 during the rotation process into a detectable linear displacement. Specifically, when the fan main shaft 201 undergoes axial movement, that is, axial deviation during the rotation process, the detection sleeve 202 rotates along with the fan main shaft 201 and undergoes axial deviation during the rotation process. The axially deflected detection sleeve 202 applies a force to the detection bearing 103, and the detection bearing 103 is subjected to the force and causes one end of the connecting rod 102 to generate a certain displacement relative to the bracket 101 along the direction of the axial deviation of the fan main shaft 201 with the hinge shaft 109 as the fulcrum, and causes the other end of the connecting rod 102 to generate a certain displacement relative to the bracket 101 along the axial deviation of the fan main shaft 201 with the hinge shaft 109 as the fulcrum. A certain displacement is generated in the opposite direction, and the linear displacement sensor detects the displacement generated at the other end of the connecting rod 102 to detect the axial offset distance of the fan main shaft 201; therefore, the fan main shaft axial offset detection device can dynamically and in real time detect the axial movement, i.e., the axial offset, of the fan main shaft 201, and according to the axial offset of the fan main shaft 201, the fan main shaft 201, the bearings matched with the fan main shaft 201 and the overall use of the fan can be judged in time. If the axial offset of the fan main shaft 201 is serious, it can be repaired in time to prevent the fault from expanding and the fan from being damaged, thereby eliminating safety hazards, saving maintenance time and maintenance costs, and ensuring the safe use of the combined air-conditioning unit.

[0031] In the present invention, the detection sleeve 202 will rotate with the fan main shaft 201 during operation, and will also vibrate with a certain amplitude along with the fan main shaft 201. It is required that the detection bearing 103 as a transmission part is more wear-resistant than the detection sleeve 202, wherein the assembly clearance between the detection bearing 103 and the detection sleeve 202 is controlled at 0.4-0.5mm, which can prevent the detection sleeve 202 from immediately rubbing against the detection bearing 103 during operation. At the same time, when the detection sleeve 202 is axially offset along with the fan main shaft 201, it will not affect the transmission effect.

[0032] The linear displacement sensor is an existing device available on the market, specifically a resistance strain type linear displacement sensor, and is composed of a measuring rod, an elastic sensitive element, a resistance strain gauge, a compensation resistor, and a housing. When the measuring rod is displaced along with the connecting rod 102, the elastic sensitive element deforms upon sensing the displacement of the measuring rod, causing the resistance strain gauge attached to the elastic sensitive element to deform as well. The resistance value of the deformed resistance strain gauge changes accordingly, and the change in resistance value of the resistance strain gauge is linearly related to the displacement of the measuring rod. The measurement circuit of the linear displacement sensor converts the resistance change value into a voltage change value or a current change value, thereby converting the axial offset distance of the fan main shaft 201 into a standard electrical signal, thereby detecting the axial offset distance of the fan main shaft 201. Preferably, the linear displacement sensor has a measuring range of 30 mm and a detection accuracy of 0.1 mm. The offset detection range of the linear displacement sensor is set to -15 mm ≤ ΔS ≤ 15 mm, and the center value of the linear displacement sensor is taken as zero, so that the left and right offset of the fan main shaft 201 can be detected.

[0033] In one embodiment, the connecting rod 102 is horizontal and perpendicular to the fan main shaft 201 when the fan main shaft 201 does not have an axial offset, and the measuring rod of the linear displacement sensor is parallel to the fan main shaft 201 .

[0034] In one embodiment, the detection bearing 103 is connected to one end of the connecting rod 102 through a bearing bracket 105. The bearing bracket 105 includes a bracket base plate 1051 that is horizontal and fixed to one side of the top surface of the connecting rod 102. Two vertical and parallel bracket side plates 1052 are integrally provided at one end of the top surface of the bracket base plate 1051. A horizontal fixed shaft 106 is fixed between the tops of the two bracket side plates 1052. The fixed shaft 106 is parallel to the fan main shaft 201 when there is no axial offset of the fan main shaft 201. The inner ring of the detection bearing 103 is sleeved and fixed on the fixed shaft 106, and the outer ring of the detection bearing 103 is clamped in a groove 2021 on the outer circumference of the detection sleeve 202.

[0035] Since the detection bearing 103 is rotatably connected to the bearing bracket 105, and the bearing bracket 105 is fixedly connected to the connecting rod 102, the detection bearing 103 can rotate relative to the connecting rod 102. In this way, when the detection bearing 103 is subjected to the force applied by the detection sleeve 202, it can rotate relative to the connecting rod 102, thereby reducing the wear of the detection bearing 103.

[0036] Preferably, a mounting long hole 10511 is provided on the bracket base plate 1051, and the extension direction of the mounting long hole 10511 is parallel to the extension direction of the connecting rod 102. The bracket base plate 1051 and the connecting rod 102 are fixedly connected by fasteners that pass through the mounting long hole 10511 and the connecting rod 102 in sequence.

[0037] In the present invention, taking into account that there are various models and specifications of the fan main shaft 201 in the combined air-conditioning unit, detection sleeves 202 of different sizes are designed to adapt to different models of fan main shafts 201, and the installation position of the bracket base plate 1051 on the connecting rod 102 is adjusted by installing the long hole 10511 to adjust the installation distance between the detection bearing 103 and the connecting rod 102, and adjust the installation distance between the detection bearing 103 and the fan main shaft 201, so that the fan main shaft axial offset detection device can adapt to different models of fan main shafts 201.

[0038] Preferably, there are two fasteners, each of which includes a fastening bolt 107 and a fastening nut 108 .

[0039] In one embodiment, a mounting base is fixed on the top surface of the bracket 101, and a plurality of mounting sliders are provided on the top surface of the mounting base on both sides of the shell of the linear displacement sensor. Each mounting slider includes a slider body and a bolt screwed on the slider body. Horizontal slide grooves are respectively provided at the bottom of both side surfaces of the shell of the linear displacement sensor. The slider bodies of each mounting slider on each side are slidably connected in the slide grooves on the corresponding side. By adjusting the arrangement position of the slider bodies of each mounting slider on each side in the slide grooves on the corresponding side, the arrangement position of the shell of the linear displacement sensor on the mounting base can be adjusted, and by tightening the bolts of each mounting slider, the shell of the linear displacement sensor is fixed to the mounting base.

[0040] In this way, by setting up multiple installation sliders, it is convenient to replace linear displacement sensors of different ranges according to measurement requirements, so that the fan main shaft axial deviation detection device has universality.

[0041] In one embodiment, an inwardly concave arcuate surface 1021 is formed on the outer surface of one side of the connecting rod 102, near the spring 104. A blind locking hole is provided on the arcuate surface 1021, into which the end of the measuring rod of the linear displacement sensor is locked. Preferably, the blind locking hole is located in the middle of the arcuate surface 1021.

[0042] In this way, the arrangement of the arc surface 1021 and the blind hole facilitates the stable connection of the end of the measuring rod of the linear displacement sensor to the connecting rod 102 .

[0043] In one embodiment, a vertical first fixing rod 1010 is fixed to the other end of the connecting rod 102. A horizontal spring 104 is arranged with one end of the spring 104 fixed to the first fixing rod 1010 and the other end fixedly connected to a second fixing rod 1011 fixed to the bracket 101. Because the connecting rod 102 is relatively long, it may be affected by the vibration of the fan main shaft 201 during rotation, resulting in a larger oscillation amplitude at the other end of the connecting rod 102. The spring 104 stabilizes the oscillation at the other end of the connecting rod 102, making the displacement data generated by the other end of the connecting rod 102 detected by the linear displacement sensor more stable and less volatile.

[0044] In one embodiment, a fastening screw is mounted on the detection sleeve 202, and the fastening screw is disposed in a keyway of the fan main shaft 201. This ensures that the detection sleeve 202 cannot move axially on the fan main shaft 201.

[0045] In the present invention, a belt is installed on one side of the fan main shaft 201 for transmission, and the fan main shaft axial deviation detection device is installed on the other side of the fan main shaft 201.

[0046] The fan main shaft axial deviation detection device can first realize the dynamic detection of the axial movement of the fan main shaft 201, so that the operation status of the fan of the combined air-conditioning unit is digitized. Secondly, it can realize accurate maintenance, improve maintenance efficiency and reduce maintenance costs.

[0047] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A device for detecting axial deviation of a fan main shaft, characterized by: The invention comprises a bracket (101) fixed on a fan base frame, a connecting rod (102) being provided above the bracket (101) and the bracket (101) being hinged to the middle of the connecting rod (102), one end of the connecting rod (102) being rotatably connected to a detection bearing (103), the detection bearing (103) being clamped in a groove (2021) formed on the outer circumference of a detection sleeve (202) fixedly sleeved at one end of a fan main shaft (201), the other end of the connecting rod (102) being connected to the bracket (101) via a spring (104), and a linear displacement sensor being fixed on the same side of the connecting rod (102) as the fan main shaft (201), the measuring rod end of the linear displacement sensor being clamped on the outer surface of the corresponding side of the connecting rod (102) at a position close to the spring (104).

2. The device for detecting axial deviation of a fan main shaft according to claim 1, characterized in that: The connecting rod (102) is horizontal and perpendicular to the fan main shaft (201) when the fan main shaft (201) does not have an axial offset, and the measuring rod of the linear displacement sensor is parallel to the fan main shaft (201).

3. The device for detecting axial deviation of a fan main shaft according to claim 1, characterized in that: The detection bearing (103) is connected to one end of the connecting rod (102) through a bearing bracket (105). The bearing bracket (105) includes a bracket base plate (1051) that is horizontal and fixed to one side of the top surface of the connecting rod (102). Two vertical and parallel bracket side plates (1052) are integrally provided at one end of the top surface of the bracket base plate (1051). A horizontal fixed shaft (106) is fixed between the tops of the two bracket side plates (1052). The fixed shaft (106) is parallel to the fan main shaft (201) when the fan main shaft (201) does not have axial deviation. The inner ring of the detection bearing (103) is sleeved and fixed on the fixed shaft (106), and the outer ring of the detection bearing (103) is clamped in a groove (2021) on the outer circumference of the detection shaft sleeve (202).

4. The device for detecting axial deviation of a fan main shaft according to claim 3, characterized in that: The bracket base plate (1051) is provided with a mounting long hole (10511), the extension direction of the mounting long hole (10511) is parallel to the extension direction of the connecting rod (102), the bracket base plate (1051) and the connecting rod (102) are fixedly connected by fasteners that pass through the mounting long hole (10511) and the connecting rod (102) in sequence, and the mounting position of the bracket base plate (1051) on the connecting rod (102) is adjusted through the mounting long hole (10511) to adjust the installation distance between the detection bearing (103) and the connecting rod (102), and to adjust the installation distance between the detection bearing (103) and the fan main shaft (201).

5. The device for detecting axial deviation of a fan main shaft according to claim 4, characterized in that: There are two fasteners, each of which includes a fastening bolt (107) and a fastening nut (108).

6. The device for detecting axial deviation of a fan main shaft according to claim 1, characterized in that: The bracket (101) and the middle part of the connecting rod (102) are hinged via a vertical hinge shaft (109).

7. The device for detecting axial deviation of a fan main shaft according to claim 1, characterized in that: A mounting base is fixed on the top surface of the bracket (101), and a plurality of mounting sliders are provided on the top surface of the mounting base on both sides of the housing of the linear displacement sensor, each of the mounting sliders comprising a slider body and a bolt screwed onto the slider body, and horizontal slide grooves are provided at the bottom of the two side surfaces of the housing of the linear displacement sensor, and the slider body of each mounting slider on each side is slidably connected in the slide groove of the corresponding side, and the arrangement position of the housing of the linear displacement sensor on the mounting base is adjusted by adjusting the arrangement position of the slider body of each mounting slider on each side in the slide groove of the corresponding side, and the housing of the linear displacement sensor is fixed to the mounting base by tightening the bolts of each mounting slider.

8. The device for detecting axial deviation of a fan main shaft according to claim 1, characterized in that: An inwardly concave arcuate surface (1021) is formed on the outer surface of a corresponding side of the connecting rod (102) at a position close to the spring (104), and a locking blind hole is provided on the arcuate surface (1021), and the end of the measuring rod of the linear displacement sensor is locked in the locking blind hole.

9. The device for detecting axial deviation of a fan main shaft according to claim 8, characterized in that: The locking blind hole is arranged at the middle position of the arc surface (1021).

10. The device for detecting axial deviation of a fan main shaft according to claim 1, characterized in that: A vertical first fixing rod (1010) is fixed at the other end of the connecting rod (102); the spring (104) is horizontal, and one end of the spring (104) is fixed to the first fixing rod (1010), and the other end is fixedly connected to a second fixing rod (1011) fixed to the bracket (101).

Images